Engine manifold construction and arrangement



June 30, 1931. v o. H. SPENCER 1,812,053

7 ENGINE MANIFOLD CQNSTRUCTION AND ARRANGEMENT Filed June 11, 1929 3 Sheets-Sheet 1 5' s F G u I i l O Y 0 m d 3 s; I

, Q w I M w 0 n I 1 o S Q n N 3 5 Z n n 0. H. SPENCER June 30, 1931. I

ENGINE MANIFOLD CONSTRUCTION AND ARRANGEMENT s Sheets-Sheet 2 Filed June 11, 1929- nven+or June 30, 19311 0.1-1. SPENCER 7 v ENGINE MANIFOLD CONSTRUCTION AND ARRANGEMENT Filed J1me 11, 1929 3 Sheets-Sheet 3 Fla. 3.

number of securingv elements; .7

PatentediJu n e 193, 1

ow'rin 1i. sr ENoEn, on INnrAiiAPoiiIs, In'nIANA l Y ENGINE MANIEQLDQQNSQIRUCTION ANnARRAnfGEMnNT j Applicationffiled June 11, 1 92. Seria1"Np. 369,997. v H

the provision of 'lneansl for attachingfthe manifolds'in such;mannerthatyone; or more of.

the cylinders of theengine may .be" removed without disarranging thej connectionsfthe; 5 v

Cooperating vvitlithe pqrts Sisan intake nmn fdd 13, ha ly-v rt eel i c extendi'ngxelbows 14, the dischargeends of which register with theportsfi, 'thejfaces of 1 manifolds with theothercylindersf'of thei'en} 3's gine not beingre ved v 4 A further .featuref f the invention is the provision of means f orgattaching plurality of manifolds in position Over; their respective ports with the employment o f'ja minimum A further featurev of the 1nV 1nti'on is the constructionofmanifolds for connection with cylinders having integralaor 'solidheads;

a (A furtherfeature of ,theniny'ention is the provision of means for conveying, the'exhaus't from both the upper and'jloyverfjends" of; the

cylinderthruasing'le'manifold.' p furthe'r feature, of the IIIYQIltJO H is the provision of means for, conveying a rto parts of the engineforjcooling the same. {j

A further} feature of lthefinventin is the a provision of means for -"conveying air to @the interior of 'the engine forlaiding/thedischarge of theexhaustand for scavenging purposes; H c Other objects and advantageswill be hereinafter more fully set forth and pointed out v in the accompanying specification.

In the accompanying drawingswhich are made t f this application,

Figure l is 'a side elevationof theupper portion of an engine, showing an intake and exhaust manifold attached thereto, with parts thereof in section.

Figure 2 is a horizontal sectional View near- Figure 3 is a ertical SGCt-I OIIal ViQW sub- I stantially along'the line 3-3,'Fig. 2.

I Referring to the drawings in which similar reference numerals designate corresponding 'gral with the cylinder proper. V,

I thru theiopenings the enhaust mani operatingi the engine;

portion or head 2'of which is preferably 'in te- I ETheQhead 2 isprovided with anintake port V3 and an exhaustport't,whieh are controlled by the usual formo'ffvalve structures, am

i 6,'re s'pectivel-y, and thesevalves are openedfin vthe,convent ona1 manner by means of rocker 55 arms 7" and 8, whiChf l i oper-ated thru the conventional rods ,9 f and v 10, tappets 12 1. and

exhaust manifold 1'6' also 121a plurality of f elbows, 1 8, the fi eefiends of which fit against the ends of the"eiihaustvports4,;the

ends of'thjeie lbows connecting withthe'Inani I f foldlfi being" in advance of the openings 7 17,:

"so that the exhau stdischarging thru the' e'l- 5' a hows l8 will notiinferrupt o'r aifectithe dis- I charge of the exhaust thru; the openings 17,

hutwill aid in 'eXpellingthe exhaustenter'ing. fold. 3 -v c r 9P'P s-si l-,Q th yl nder 1 ifrom the: intake and,eXhgmst manifolds, is a pair Ofair conveying,manifolds l9 a'nd 20,-

Zthe manifoldlf); conveying aiiifrom anys'ui-tf- ,v

able source to air chambers 21, while the manifold2Q conyeysj-airkto ainjackets22 surrounding the -.cylindersf1 preferably atpoints i receixingthe'greatestam intgofvhea'tgincident f V t h explo' nsid th se 1. d for hefair enters the f Q";-

icylinders l from th'ejcha 'bers2l'thrji ports j 23',fwhich air aGt'stOdi tQHhB fue'lchargeas' 1 well as scavenginggthecylindersandf aiding inforcing theiexha'ust from the cylinders, a lfvalve 24: being arranged: for controlling'the passage of the air'thru'the port 23, 5

The air jackets 22 referably round the cy'lindersfl, and the air enteringthe :Sune fromthe lnanifold:20geseapes thru bores I 25 "('seefFig. 2 which preferably extend F99 vertically thru the head portions 2 of the cylinders, the placing of the bores in this manner aiding in the discharge of the air from the jackets 22, owing to the tendency of heat to naturally ascend when released.

The openings 26 and 27 in the manifolds 19 and 20, respectively, lit snugly against the openings 28 and 29 in the chamber 21 and jackets 22, respectively, and the manifolds 19 and 20 are held in fixed relation with their respective parts by means of bolts 30 and clamping arms 31 on the ends thereof, said clamping arms spanning said manifolds 19 and 20, while the bolts 30 extend transversely of the engine and preferably between the cylinders 1.

The same bolts 30 serve to clamp the exhaust manifold 16 in position on the engine, said bolts passing thru lugs 32 on the top edge of the manifold 16,,nuts 33 being threaded onto the bolts for clamping the manifolds 16, 19 and 20 in fixed positions.

The intake manifold 13 and the free ends of the elbows 18 are clamped in position over the ports 3 and 4, respectively, by means of stud bolts 34, the inner ends of which are preferably threaded into parts of the cylin ders 1, clamping arms 35 being placed on the bolts 34 and spanning the elbows 14 and 18 of the intake manifold 13 and exhaust manifold 16. By connecting the elbows 14 and 18 in this manner, but a single bolt 34 is required for attaching the pairs of elbows to each cylinder.

The end faces of the ports 3 and 4 are in vertical alignment with the faces of the exhaust ports 15 and the faces of the openings 29 to the ackets 22 are in vertical alignment with the faces of the openings 28 into the chambers 21, so that by loosening the bolts 30 on opposite sides of any particular cylinder, and loosening the bolt 34 with that particular cylinder, said cylinder may be removed Without dismantling the manifolds or without disturbing the other cylinders. In returning the cylinder to position on the engine base, it is but necessary to properly register the ports therein with the respective openings in the several manifolds and then tighten the bolts previously released, in order to secure the manifolds to the cylinder.

The faces of all the openings in the manifolds 011 either side of the cylinders are in alignment with each other so that all such faces may be machined at one operation, and likewise the faces of the various port openings in the engine cylinders are so arranged that all the ports on one side of the cylinder may be machined at one operation, thereby greatly reducing the cost of manufacture as well as insuring a perfect fit between the port faces and the openings in the various manifolds.

While the description and drawings illustrate in a general way certain instrumentalities which may be employed in carrying the invention into efiect, it is evident that many modifications may be made in the various details without departing from the scope of the appended claims, it being understood that the invention is not restricted to the particular examples herein described.

I claim as my invention:

1. The'combination with the cylinders of an engine, each having an exhaust port at one side thereof, and air receiving openings on the opposite side thereof from the exhaust port, of an exhaust manifold for cooperation with said exhaust ports, a pair of air conveying manifolds for cooperation with said air receiving openings, and means extending transversely of the engine for clamping all of said manifolds in engagement with the cylinders of an engine.

2. The combination with the cylinders of an engine having exhaust ports at one side and air inlets on the opposite side, and openings for cooperation with said ports and inlets, of means extending transversely between said cylinders for clamping said manifolds in engagement with said cylinders, whereby, when certain of said clamping means are released certain of said cylinders may be removed or assembled without dismantling said manifolds.

3. The combination with the cylinders of an engine each having an exhaust port at its lower extremity and a pair of air receiving openings on the opposite side thereof one above the other, of an exhaust manifold having openings for registration with said exhaust ports, a pair of air conveying manifolds having openings for registration with the air ports of the cylinders, and bolts extending transversely of the engine adapted to clamp allof said manifolds in position over their respective ports. I

In testimony whereof, I have hereunto set my hand on this the 31st day of May, 1929 OWEN H. SPENCER. 

